CN101791223A - Airway data processing device and method thereof - Google Patents
Airway data processing device and method thereof Download PDFInfo
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- CN101791223A CN101791223A CN201010042831A CN201010042831A CN101791223A CN 101791223 A CN101791223 A CN 101791223A CN 201010042831 A CN201010042831 A CN 201010042831A CN 201010042831 A CN201010042831 A CN 201010042831A CN 101791223 A CN101791223 A CN 101791223A
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Abstract
The invention discloses an airway data processing device, which comprises a sensor and a data processing circuit. The sensor is used for detecting airway parameters of a patient and sending the airway parameters to the data processing circuit; the data processing circuit performs stray process on the airway parameters of the patient from the sensor; and the stray process comprises the steps of solving an average value and offset values for the numerical values corresponding to the airway parameters of the patient and solving the average value after the numerical values corresponding to the stray offset values are removed. The invention also discloses an airway data processing method for the airway data processing device. The airway data processing device and the airway data processing method can improve the stability of data acquisition, reduce the influence of outside sudden interference, and further improve the detection accuracy and reliability of a machine.
Description
Technical field
The present invention relates to medical instruments field, particularly the airway data processing device of sensor signals such as the air flue flow of respirator and anesthetic machine, pressure, oxygen concentration, carbon dioxide content.The invention still further relates to the air flue data processing method that is used for above-mentioned airway data processing device.
Background technology
The medical electronics product is respirator for example, it is severe case's important salvage tool, more and more general in clinical practice, become the equipment of section office's indispensabilities such as ICU (Intensive Care Unit: serious symptom strengthen nursing), Pneumology Department, emergency department, Anesthesia Recovery Room, be used to anaesthetize, the respiratory failure due to a variety of causes and the breathing Supporting Therapy after the major operation.How to improve the reliability and stability of respirator, significant to clinical reference.
Respirator mainly is made up of gas circuit structure and electrical control two large divisions, gas circuit structure provides the patient respiration gas flow loop, electric control system provides the driving of device parts such as valve, pick off, and to the detection of sensor signal, thereby realize adjusting and monitoring, to reach the purpose that appropriate throughput is provided to patient to throughput.Respirator relates to the data acquisition and processing (DAP) of sensor signals such as flow, pressure, oxygen concentration, gas concentration lwevel in the course of the work.Because extraneous bursty interference (as sensor drift, switching signal, electromagnetic radiation etc.), make and give AD by pick off (Analog to Digital: analog digital conversion) data accidental projection occurs or fall, be so-called signal " saltus step ", and then the data that cause AD the to collect deviation that peels off.Reduce to peel off data to the influence of testing result, improve the precision of date processing, significant to the reliability that improves machine.
In order to obtain AD sampled data accurately, adopt two kinds of methods (1) arithmetic mean of instantaneous value method on present most of machine: detect several values of data sampling (point), these values are got arithmetical average, the value (a certain section time interior value, for example values such as flow, pressure, oxygen concentration, gas concentration lwevel) of resulting result for detecting; (2) rejecting is worth method most: detect several values of data sampling, reject wherein maximum and minima, more remaining data are got arithmetical average, the value of resulting result for detecting.
Yet, more than two kinds of equal defectiveness of data processing method.First kind of arithmetic mean of instantaneous value method, to the influence of testing result, outlier is always interfered testing result can not to get rid of outlier (value or little value greatly) fully.Second method makes moderate progress, and has rejected maximum and minima, favourable to handling the bilateral data that peel off, but peels off for monolateral, still exists than mistake.
Illustrate now, suppose because external disturbance makes sensing data (desired value about 100) occur falling, AD image data sequence is { 100.2,100.5,99.8,81.5,80.2 100} adopts two kinds of methods of prior art to obtain parameter values for detection now, first method, directly adopt the arithmetic mean of instantaneous value method, result of calculation is 93.7, deviation desired value about 6.3%; Second method adopts to reject to be worth method most, gets arithmetic mean of instantaneous value again, and result of calculation is 95.4, deviation desired value about 4.6%.During actual product is used, if the detection deviation of data greater than 3%, just there is functional issues in machine so, the perhaps inaccurate problem in school, thereby be necessary to improve the accuracy of Data Detection.
Summary of the invention
In order to solve the above-mentioned technical problem of prior art, be necessary to provide a kind of stability that can effectively improve the pick off of armarium to the patient airway date processing, reduce the data that peel off greatly to the influence of testing result, and improve the airway data processing device of Data Detection accuracy.
Also be necessary to provide a kind of air flue data processing method of above-mentioned airway data processing device.
Technical scheme provided by the invention is: a kind of airway data processing device, comprise pick off and data processing circuit, described pick off is used to detect the patient airway parameter and sends to described data processing circuit, described data processing circuit is to the processing that peels off of the patient airway parameter from pick off, comprises that averaging, ask deviate and rejecting to peel off to patient airway parameter value corresponding averages after the deviate value corresponding.
In the airway data processing device of the present invention, also comprise the patient airway loop, described pick off connects described patient airway loop.
In the airway data processing device of the present invention, described data processing circuit comprises modulus sampling module and digital signal processing module, to described digital signal processing module, described digital signal processing module is to the processing that peels off of the signal of modulus sampling module according to the parameter of described sensor output digital signal corresponding for described modulus sampling module.
In the airway data processing device of the present invention, described patient airway parameter comprises flow, pressure, oxygen concentration and gas concentration lwevel parameter.
In the airway data processing device of the present invention, data processing circuit also comprises the analog signal conditioner module, described analog signal conditioner module is arranged between pick off and the modulus sampling module, is used for the patient airway parameter of sensor is processed into the data that are fit to described modulus sampling module processing.
A kind of air flue data processing method comprises sensor patient airway parameter and sends to data processing circuit; Described data processing circuit is to the processing that peels off of described patient airway parameter, wherein, described peel off to handle comprise that specifically averaging, ask deviate and rejecting to peel off to patient airway parameter value corresponding averages after the deviate value corresponding.
In the air flue data processing method of the present invention, described patient airway parameter comprises flow, pressure, oxygen concentration and gas concentration lwevel parameter.
In the air flue data processing method of the present invention, described data processing circuit peels off to described patient airway parameter and handles the concrete following operation of carrying out: described patient airway parameter is sampled, obtain n data sequence, wherein n is a natural number; A described n data are carried out the arithmetic mean of instantaneous value computing; Ask the absolute value of the deviation of a described n sampled data and its arithmetic mean of instantaneous value respectively, obtain n deviate; A described n deviate is sorted, write down m wherein bigger deviate, and write down described m the sampled data than large deviation value correspondence, wherein m is the natural number that is not more than n; Described m is rejected from the sampled data sequence than the sampled data of large deviation value correspondence, and remaining (n-m) individual data are got arithmetic mean of instantaneous value.
In the air flue data processing method of the present invention, wherein the value of m can be set according to the ratio of sampled data number n.
In the air flue data processing method of the present invention, described patient airway parameter comprises flow, pressure, oxygen concentration and gas concentration lwevel parameter.
Compared with prior art, the beneficial effect of data processing equipment of the present invention is to utilize data processing circuit to the processing that peels off of the patient airway parameter of sensor, comprise that averaging, ask deviate and rejecting to peel off to patient airway parameter value corresponding averages after the deviate value corresponding, can be good at getting rid of and peel off data, improve the parameter detecting accuracy for the interference of testing result.
The further beneficial effect of airway data processing device of the present invention is to comprise modulus sampling module and digital signal processing module, the modulus sampling module can be converted to the patient airway parameter and be used for the digital signal that digital signal processing module is handled from the analogue value, digital signal processing unit is to the parameter processing that peels off, thereby improves the stability of data deformity and accuracy and the reliability that detects.
The further beneficial effect of airway data processing device of the present invention is to comprise the analog signal conditioner module, to the analog parameter of sensor have amplification, dwindle, function such as filtering and protection.
The further beneficial effect of airway data processing device of the present invention is to handle comprising parameters such as flow, pressure, oxygen concentration, gas concentration lwevel in the patient airway parameter.
The beneficial effect that air flue data processing method of the present invention has is to utilize data processing circuit to the processing that peels off of the patient airway parameter of sensor, comprise that averaging, ask deviate and rejecting to peel off to patient airway parameter value corresponding averages after the deviate value corresponding, can be good at getting rid of the interference of data that peel off for testing result, improve the parameter accuracy, thereby improve stability, accuracy and the reliability that detects.
The beneficial effect that air flue data processing method of the present invention further has is to handle comprising parameters such as flow, pressure, oxygen concentration and gas concentration lwevel in the patient airway parameter.
The beneficial effect that air flue data processing method of the present invention further has is by step such as averaging, average after the deviate, rejecting outlier for the patient airway parameter, having improved stability, accuracy and the reliability of patient airway parameter detecting effectively.
Description of drawings
Fig. 1 is the system structure sketch map of airway data processing device first embodiment of the present invention.
Fig. 2 is the system structure sketch map of airway data processing device second embodiment of the present invention.
Fig. 3 is the schematic flow sheet of a kind of embodiment of air flue data processing method of the present invention.
The specific embodiment
Below in conjunction with Figure of description embodiment of the present invention is described further.
Seeing also Fig. 1, is the system structure sketch map of airway data processing device first embodiment of the present invention, comprises pick off 10 and data processing circuit 20, and pick off 10 is used to detect the patient airway parameter and sends it to described data processing circuit 20.The processing that peels off of 20 pairs of patient airway parameters of data processing circuit from pick off 10.
Seeing also Fig. 2, is the system structure sketch map of airway data processing device second embodiment of the present invention, and it comprises patient airway loop 1, pick off 2, data processing circuit 3 and display device 6.The processing that peels off of 30 pairs of detection data of data processing circuit from pick off 2.
This air flue data processing circuit 3 comprises analog signal conditioner module 30, AD sampling module (modulus sampling module) 40 and digital signal processing circuit 50.Pick off 2 connects patient airway loops 1, is used to detect the various parameters in patient airway loop 1, such as flow, pressure, oxygen concentration, gas concentration lwevel etc., and detected parameters is converted to corresponding voltage signal and sends to analog signal conditioner module 30.Analog signal conditioner module 30 is nursed one's health the voltage signal that receives to become to be fit to output to AD sampling module 40 after AD sampling module 40 sample range and carry out analog-to-digital conversion process.AD sampling module 40 output digital signal corresponding are to digital signal processing circuit 50, digital signal processing circuit 50 sends corresponding shows signal to display device 6 according to the digital signal that receives, thereby shows testing result with waveform or numerical value form in display device 6.Described pick off 2 comprises that gas goes out that pick off is gentle goes into pick off, thereby finishes the parameter detecting to the patient airway loop.Functions such as described analog signal conditioner module 3 has amplification, dwindles, filtering and protection.
As shown in Figure 3, interference source 7 is to cause that patient airway loop 1 gas circuit is interfered, pick off is interfered, or circuit part be interfered variously have a paroxysmal interference source.In the machine works process, because the interference source 7 of machine exterior and inside is unpredictable, for example source of the gas shakiness, pick off are disturbed, electromagnetic radiation, conductivity or the like, and " saltus step " appears in the data on flows that makes pick off 2 detect, and produces so-called " saltus step " data.
The operation principle of airway data processing device of the present invention is as described below: pick off 2 detects patient circuit's throughput information, through analog channel signal condition 30, be processed into and satisfy AD and adopt module 40 acceptable than large-signal, by AD sampling module 40, digital signal processing circuit 50, being processed into needs figure or the data signal that shows and outputs to display device 6 again.
Please consulting Fig. 3 simultaneously, is air flue data processing method schematic flow sheet of the present invention.Air flue data processing method of the present invention adopts the processing method that peels off, and it comprises:
Step 201 obtains original data sequence X (i): adopt module 40 samplings to obtain original data sequence X (i) by AD, i=1 wherein, 2,3......n;
Step 202 obtains the arithmetic mean of instantaneous value X0 of sequence X (i): by 5 pairs of initial datas of digital signal processing circuit ask arithmetic mean of instantaneous value X0=[X (1)+X (2)+X (3)+...+X (n)]/n;
Step 203, obtain sequence D (i)=| X (i)-X0|: by 50 pairs of sequence X of digital signal processing circuit (i) and meansigma methods X0 ask biased sequence D (i)=| X (i)-X0|;
Step 204, find out m D (j) bigger in the sequence D (i): (i) sorts to the data sequence D, finds out a wherein bigger m D (j), 1≤m, j≤9, and write down corresponding X (j);
Step 205 weeds out m the X (j) corresponding with D (j): obtain remaining (n-m) individual data;
Step 206, remaining (n-m) individual original series data are averaged: remaining (n-m) individual initial data is got arithmetic mean of instantaneous value, promptly gets the end value Y0 that detects.
The data that peel off in the plurality of data sequence of above-mentioned air flue data processing method to 40 samplings of AD sampling module are rejected, data after rejecting are got arithmetical average, to obtain detected value, the data that reduce greatly to peel off are to the influence of testing result, thereby improve the stability of date processing.In the above-mentioned steps 204, the occurrence of m can be set according to the certain proportion of sampled data.
Describe for example below.For example, suppose that exact value is 100, for AD image data sequence 100.2,100.5,99.8,81.5,80.2,100}, adopt the processing method that peels off:
Obtaining its meansigma methods is 93.7;
Biased sequence be 6.5,6.1,12.2,13.5,6.3};
{ 12.2} is with { 13.5}, corresponding initial data are { 81.5} and { 80.2} to calculate 2 wherein bigger outlier;
{ 81.5} is with { 80.2}, residue initial data arithmetic mean of instantaneous value result of calculation is 100.1, compares exact value 100 deviations 0.1% in rejecting from original data sequence.As seen, compared to prior art, airway data processing device of the present invention and method thereof adopt the processing that peels off, and have effectively improved the stability and the capacity of resisting disturbance of data sampling and detection.
The digital signal processing circuit of airway data processing device of the present invention adopts the processing method that peels off, by sampled data is averaged and deviate, and average after " saltus step " data that peel off (sampled data of the deviate that peels off correspondence) are rejected, the influence of data to whole detection desired value reduces to peel off, thereby improve the stability of Data Detection, implement with low costly, have good practical values.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. airway data processing device, it is characterized in that: comprise pick off and data processing circuit, described pick off is used to detect the patient airway parameter and sends to described data processing circuit, described data processing circuit is to the processing that peels off of the patient airway parameter from pick off, described peel off to handle comprise that averaging, ask deviate and rejecting to peel off to patient airway parameter value corresponding averages after the deviate value corresponding.
2. airway data processing device as claimed in claim 1 is characterized in that: also comprise the patient airway loop, described pick off connects described patient airway loop.
3. airway data processing device as claimed in claim 1, it is characterized in that: described data processing circuit comprises modulus sampling module and digital signal processing module, described modulus sampling module arrives described digital signal processing module according to the parameter output digital signal corresponding of described sensor, and described digital signal processing module carries out the described processing that peels off to the signal of modulus sampling module.
4. as the arbitrary described airway data processing device of claim 1-3, it is characterized in that: described patient airway parameter comprises flow, pressure, oxygen concentration and gas concentration lwevel parameter.
5. airway data processing device as claimed in claim 3, it is characterized in that: described data processing circuit also comprises the analog signal conditioner module, described analog signal conditioner module is arranged between pick off and the modulus sampling module, is used for the patient airway parameter of sensor is processed into the data that are fit to described modulus sampling module processing.
6. air flue data processing method comprises:
Sensor patient airway parameter also sends to data processing circuit;
Described data processing circuit is to the processing that peels off of described patient airway parameter, wherein, described peel off to handle comprise that specifically averaging, ask deviate and rejecting to peel off to patient airway parameter value corresponding averages after the deviate value corresponding.
7. air flue data processing method as claimed in claim 6 is characterized in that, described patient airway parameter comprises flow, pressure, oxygen concentration and gas concentration lwevel parameter.
8. air flue data processing method as claimed in claim 6 is characterized in that, described data processing circuit peels off to described patient airway parameter and handles the concrete following operation of carrying out:
The patient airway parameter is sampled, obtain n data sequence, wherein n is a natural number;
A described n data are carried out the arithmetic mean of instantaneous value computing;
Ask the absolute value of the deviation of a described n sampled data and its arithmetic mean of instantaneous value respectively, obtain n deviate;
A described n deviate is sorted, write down m wherein bigger deviate, and write down described m the sampled data than large deviation value correspondence, wherein m is the natural number that is not more than n;
Described m is rejected from the sampled data sequence than the sampled data of large deviation value correspondence, and remaining (n-m) individual data are got arithmetic mean of instantaneous value.
9. air flue data processing method as claimed in claim 8 is characterized in that: wherein the value of m can be set according to the ratio of sampled data number n.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103705244A (en) * | 2013-12-16 | 2014-04-09 | 天津大学 | Method for synchronously monitoring breath pressure and concentration of carbon dioxide in main flow mode |
| CN108053470A (en) * | 2017-12-28 | 2018-05-18 | 昆明医科大学第附属医院 | One kind is based on MRI difficult airways three-dimensional rebuilding method and application |
| CN110094828A (en) * | 2018-01-31 | 2019-08-06 | 三星电子株式会社 | Air cleaning system and its control method |
-
2010
- 2010-01-19 CN CN201010042831A patent/CN101791223A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103705244A (en) * | 2013-12-16 | 2014-04-09 | 天津大学 | Method for synchronously monitoring breath pressure and concentration of carbon dioxide in main flow mode |
| CN103705244B (en) * | 2013-12-16 | 2015-05-20 | 天津大学 | Method for synchronously monitoring breath pressure and concentration of carbon dioxide in main flow mode |
| CN108053470A (en) * | 2017-12-28 | 2018-05-18 | 昆明医科大学第附属医院 | One kind is based on MRI difficult airways three-dimensional rebuilding method and application |
| CN110094828A (en) * | 2018-01-31 | 2019-08-06 | 三星电子株式会社 | Air cleaning system and its control method |
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Application publication date: 20100804 |